e-motion SCA-LE-30-03 User manual

Manual SCA-LE-30-03 V 0.9 10/02 page 1
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
SCA-LE-30-03 (30V, 3A)
The servo amplifier SCA-LE-30-03 is a powerful servo
amplifier for brushed DC motors with an output range up to
75 Watt.
The standard operation mode is
•Speed control with encoder feedback
Additionally integrated operating modes are:
oCurrent control
oI x R control
oDC-Tacho control
oVoltage control
These operating modes are described in the manual SCA-
LS-30-03.
The required operation mode is to be selected with jumpers,
which are accessible externally at any time. This SCA-LE-
30-03 servo amplifier is protected against over current and
overheat. Due to the wide range of power supply voltage
between 11 to 30 V DC the
SCA-LE-30-03 can be used very flexible with different kinds of power supplies. Because of the linear output
stage, no external choke is required. The robust aluminium case has been constructed for different
methods of mounting it, therefore a fast and easy integration is provided. Screw terminals and a durable
controller-design allow a fast and straightforward commissioning.
Contents
1. Safety notes...................................................................................................................................... 1
2. Specification..................................................................................................................................... 2
3. Internal Components of this drive................................................................................................... 3
4. Description of inputs and outputs of power stage section, terminals (1)-(14)............................ 4
5. Description of inputs and outputs of encoder section, terminals (15)-(28)................................. 6
6. Configuration.................................................................................................................................... 8
7. Operating modes............................................................................................................................ 10
8. Connection of inputs and outputs................................................................................................. 11
9. Commissioning............................................................................................................................... 12
10. Troubleshooting ............................................................................................................................. 13
11. Dimensions..................................................................................................................................... 13
12. Versions of Text.............................................................................................................................. 13
1. Safety notes
1.1. Skilled personnel
The installation and commissioning have to be done only by skilled personnel.
1.2. Laws
The user has to ensure the correct installation of the servo amplifier and additional equipment
according to valid laws and rules.
1.3. Remove load
For first commissioning the motor should run with free shaft which means without load.
1.4. Additional safety components
Electronic components are not free of failure or damage. Therefore plants have to be installed with
additional device and installation protecting components. A safe and stable state has to be ensured in
the case of damage of some devices, wrong handling, cable disruption and other cases of any kind of
malfunction.

Manual SCA-LE-30-03 V 0.9 10/02 page 2
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
1.5. Repairs
Repairs have to be done only by authorized distributors or at the manufacturer. Unauthorized opening
and improper repairs of the device may cause danger to the user and the plant.
1.6. Danger
Care about having no power supply voltage all around the plant during installation of the device!
Never touch any voltage-carrying components!
1.7. Maximum input voltage
The input power supply voltage must not exceed 30 V DC. Voltages exceeding 30 V or reversed
connection will destroy the unit.
1.8. ESD
Do not touch any of the contacts of the device.
1.9. EMC
The SCA-LE-30-03 corresponds to the EC directives,standards and regulations 89/336/EWG article
10 and appendix 1 (EMV) amended by 92/31/EWG and 93/68/EWG and meet the requirements with
standard EN 61800-3 (1996) if the following directions are observed:
•usage of a zinc plated mounting plate, well connected to earth
•mounting of the drive by usage of toothed washers
•usage of shielded cables to and from the unit
•large area contact of the shielding with zinc plated mounting plate.
•motor housing properly connected to earth
Special requirements have to be considered by the user.
2. Specification
Power supply voltage 11 -30 V DC
2.1. Electrical
data Nominal output current 3 A
Set value -10 ... + 10 V
Encoder 5V single ended or
5V RS 422 or
24V single ended or
24V push-pull
600kHz max input frequency, 2 ch. required
Tacho Max 50 VDC (50kOhm)
2.2. Inputs
Enable 8 -30 V high active
Supervision output Error Open Collector max. 30 V DC
Tacho out max. +/-3,9 V/max. 20mA
Auxiliary voltage output +5V / 100 mA
2.3. Outputs
Auxiliary voltage output +/-reference +/-3,9 V/max. 20mA
2.4. Display 2-colour LED green: ready/enabled, red: error/disabled
2.5. Weight With terminal connector 360 g
2.6. Dimensions (DxWxH) 100 x 117 x 40 mm
Operation 0 ... + 40 oC
2.7. Temperature-
range Storage -25 ... + 80 oC
2.8. Humidity
range Non condensing 20% -80% rel. hum.

Manual SCA-LE-30-03 V 0.9 10/02 page 3
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
3. Internal Components of this drive
This drive consists mainly of three parts.
•A common housing
•A power stage section which is located on the lower side of the drive
•An encoder to tacho converter section which is located on the upper side of the drive
Both sections have their own PCB and are not connected internally
3.1. Power stage section
Terminal numbers (1) to (14)
The power stage section of this drive is mainly the same than the one which is used in the SCA-LS-30-03.
Therefore also the standard operation modes IxR compensation, Tacho feedback, voltage control and
torque control are still integrated, but not used when operating in encoder feedback mode.
3.2. Encoder to tacho converting section
Terminal numbers (15) to (28)
This unit is mainly the same than used in the encoder to tacho converter unit ASA-PC-24-01

Manual SCA-LE-30-03 V 0.9 10/02 page 4
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
4. Description of inputs and outputs of power stage section, terminals (1)-(14)
In brackets () the terminal number
4.1. Inputs
4.1.1. Set value (7), (8)
The set value input is connected to an differential amplifier.
Input voltage range: -10 V ... + 10 V
Input impedance: 100 kOhm
Definition of polarity: positive set value (+ Set value) > (-Set value)
negative set value (+ Set value) <(-Set value)
Input connection set value:
Soll Gnd
+SetValue
100k
100k
47k
47k
GNDA
4.1.2. Enable (14)
High potential at the input enable will activate speed/torque control and voltage will be applied to the
motor winding. Leaving this input open or pulling it to GND-potential will result in disabling the unit
Input connection Enable:
Enable In 2k2 2k2
4k7
1n

Manual SCA-LE-30-03 V 0.9 10/02 page 5
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
4.1.3. + Tacho (5)
4.1.4. –Tacho (6)
Due to the operating mode encoder feedback, the outputs of the encoder to tacho conversion stage
have to be connected to these inputs.
Input impedance: 50 kOhm
Maximum input voltage: 50 V
Input connection tacho:
+Tacho
-Tacho
1k 33k 100k
33k
50k
100k 4k7
GNDA
4.1.5. + Vcc (3)
4.1.6. Power GND (4)
Power supply connector.
Caution: DO NOT connect + Vcc and Power GND to the outputs + Motor or -Motor.
4.2. Outputs
4.2.1. Auxiliary voltage output Enable + V (13)
The auxiliary voltage output Enable + V provides a low-resistant connection to pin + Vcc (3).
+Vcc
Enable +V
1k
4.2.2. Supervising report Error Out (11)
The error-signal is to show the status of the drive and can be used to provide a feedback signal to
other devices and controls. The open-collector is normally turned off which means the output is
pulled to a positive level by the means of an external resistor. In case of a fault or if the drive is
disabled (input Enable In (14) not connected to an external positive voltage > 11 V) the output is
pulled to GND.
Input voltage range: max. 30 V DC
Load current: < 20 mA
Output connection Error:

Manual SCA-LE-30-03 V 0.9 10/02 page 6
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
4.2.3. Auxiliary voltage outputs + Reference (9), -Reference (10)
The auxiliary voltage outputs + reference and -reference provide a voltage of +/-3,9 V in reference
to analog GND. Analog GND is on half the level of the power supply voltage. Therefore there is no
direct connection to Power GND or GND Signal. These auxiliary voltage outputs are for connection
with an external potentiometer and must not be connected to any other pin or for any other purpose.
Input connection reference voltage generator:
100R
-Ref
+Ref
100R 33k
33k
GNDA
4.2.4. + Motor (1)
4.2.5. -Motor (2)
Outputs for motor connection. When the motor is connected in the right way, it should turn clockwise
at a positive output voltage. Otherwise swap the motor lines to ensure that the motor is running
clockwise at a positive voltage between terminals (1) and (2)
5. Description of inputs and outputs of encoder section, terminals (15)-(28)
In brackets () the terminal number
The main function of the encoder section is to convert a digital input signal provided by an incremental
encoder to an analogue output voltage which can be used as a kind of tacho signal. This artificial
tacho signal is fed back to the power stage section as a speed feedback of the motor system.
Therefore the operating mode of the power section is similar to the operation mode “tacho feedback”.
5.1. Inputs
5.1.1.Gnd (27)
This pin is internally connected to pins (25) and (21)
5.1.2.24 V Opt. In (28)
This input has to be connected to 24 V if a 24V push-pull encoder should be used. For the operation
with 5 V encoders this input must not be connected.

Manual SCA-LE-30-03 V 0.9 10/02 page 7
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
5.1.3. Encoder (15) -(20)
The encoder inputs are to be connected to an incremental encoder with a two, respectively three
channel output. Channel A and B should have an electrical phase shift of 90 degrees. Take care that
channel A is running in front of channel B when turning the motor shaft clockwise. Otherwise the
speed loop is open and speed control is not possible.
It is possible to operate this drive with an encoder with single ended signals of the or with differential
signals or line driver corresponding to the RS 422 standard.
Two channels (A and B) are required, a third channel (I) can be connected but it is not necessary.
This is also valid for the inverted signals (/A, /B, /I)
Operation with 5 V encoder type:
Input voltage range low signal: 0 V ... + 1,7 V
Input voltage range high signal: +3,0V ... +5 V
Operation with 24 V encoder type:
Input voltage range low signal: 0 V ... + 5,5 V
Input voltage range high signal: +13,0V ... +24 V
5.1.4. + Vcc (26)
5.1.5. Power GND (25)
Power supply connector.
The encoder section of this drive has to be connected to DC-Power supply voltage in the range of
11-30 V. It is useful to connect these inputs in parallel directly to the power supply inputs of the power
stage section If a 24V encoder type should be used, the Input 24V Opt. In (28) , has to be connected
to 24V DC. In this case an additional connection of the pin +Vcc (26) is not necessary.
Although this pin (25) is connected internally to the other two Gnd pins (21) and (27), this one Power
GND (25), has to be used for the power supply of the encoder module section because of he current
occurring to feed this subsytem
5.2. Outputs
5.2.1. Auxiliary voltage output Gnd (21)
5.2.2. Auxiliary voltage output + 5V / 100mA (22)
The auxiliary voltage output + 5V / 100mA (22) provides 5V DC, in reference to the auxiliary voltage
output Gnd (21). This voltage can be used for an encoder with an input of 5V.
5.2.3.+ Tacho out (24)
5.2.4. –Tacho out (23)
The encoder module provides an analogue output voltage similar to an analogue output voltage of a
tacho. These voltage signals have to be connected directly to the according terminals of the power
stage section.

Manual SCA-LE-30-03 V 0.9 10/02 page 8
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
6. Configuration
For correct function please consider the required setting of
•Operation mode
•Input for Set Value
•Maximum input frequency of encoder
and place the according jumpers at the front side of the drive, where :
* means...set Jumper -- means remove Jumper.
6.1. Selection of Operating mode (Jumper 1 -4)
Operating mode J1 J2 J3 J4
Encoder feedback *-- -- --
Other operating modes than encoder feedback are described in the manual SCA-LE-30-03
6.2. Selection of Input for Set Value (Jumper 5 –6)
J5 J6
Via Offset Pot **
Via Ext. Pot *--
Via Set Value -- --
6.3. Selection of maximum input frequency of encoder module(Jumper 7 –12)
n_max * resolution
frequency_max = --------------------------
60
frequency_max J12 J11 J10 J9 J8 J7
600kHz -- -- -- -- *--
300kHz -- -- -- -- **
150kHz -- -- -- -- -- --
75kHz *-- -- -- -- *
60kHz *-- -- **--
30kHz *-- ****
15kHz *-- -- *-- --
7,5kHz *-- **-- *
6kHz **-- ***
1,5kHz **-- *-- *
J12 is responsible for the filtering of the output signal of the encoder/tacho conversion module. If it is
set, the quality of the signal is better but the dynamic range is reduced due to the lowpass response.
Example: resolution 500 counts per revolution (cpr)
nmax = 2520 round per minute (rpm)
maximum frequency: (2520 rpm * 500cpr) / 60 = 21000 Hz = 21 kHz
jumpers 7,8,9 and 10 have to be placed to get the desired signal

Manual SCA-LE-30-03 V 0.9 10/02 page 9
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
6.4. Location of Jumpers
J9
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28
J1 J2
J3 J4
J5 J6
J7 J8
J10
J11 J12

Manual SCA-LE-30-03 V 0.9 10/02 page 10
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
7. Operating modes
7.1. Minimum wiring
•Encoder feedback Set Jumper 1, remove J 2,3,4
Enable +V
Error Out
+Reference
Power Gnd
+ VCC
-Motor
+Motor
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Power Supply 11-30 VDC
Motor
+Tacho
-Tacho
+Set value
-Set value
-Reference
Gnd Signal
Enable In
option, see manual
Gnd
Power Gnd
- Tacho out
Encoder /B
Encoder /A
EncoderA
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Encoder I
Encoder /I
Gnd
+5V / 100 mA
+ Tacho out
+Vcc
24V Opt. In
Encoder B Enc.
minimum wiring contains at least the wiring of
othe motor itself
othe power supply
othe encoder
othe enable input (see chapter 7) and
othe connections between the referring terminals of the encoder section to the power stage
section
which means the direct wiring of the signals:
o+Tacho
o-Tacho
oPower Gnd
o+Vcc

Manual SCA-LE-30-03 V 0.9 10/02 page 11
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
8. Connection of inputs and outputs
8.1. Connection Enable-Input
The enable input can be switched on by the means of an external ground based voltage (high active)
Enable +V 14 13
12Gnd Signal
Enable In
+8V...+30V
or by the means of the auxiliary voltage output enable + V (13) and a potential free switch (no).
Enable +V
14
13
Enable In
8.2. Input for Set Value
The set value for the speed can be set on three different ways.
8.2.1. Input for set value by the means of external potentiometer
+Reference 10 9
8
7+Set value
-Set value
-Reference
In this case the pin (8) must not be connected.
8.2.2. Input for set value by the means of an analog voltage reference
8
7+Set value
-Set value
-10V...+10V
8.2.3. Input for set value by the means of the integrated potentiometer for offset adjustment
In this case the pins (7) -(10) must not be connected.
8.3. Wiring output error out
Error Out 11
Last
Load
max. 30V

Manual SCA-LE-30-03 V 0.9 10/02 page 12
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
9. Commissioning
9.1. Selection of power supply
Any power supply can be used as long the minimal requirements listed below are fulfilled. We
recommend to remove the motor from the mechanical construction to avoid damage and danger by
uncontrolled movements.
Requirements to the power supply:
Output voltage: min. 11 V DC max. 30 V DC
Residual voltage: < 5 %
Output current: 3 A nominal.
9.2. Function of the potentiometers
Potentiometer Function Turning ccw Turning cw
Gain Gain adjustment Decreasing Increasing
N max Maximum speed at set value of
10 V Decreasing speed Increasing speed
I max Current limitation Decreasing min. 0 A Increasing max. 3 A
I x R none
Offset adjustment n=0 at set value= 0 Motor turns cw Motor turns ccw
9.3. Presetting of potentiometers
Original delivered servo amplifiers are adjusted to uncritical values and for easy adjustment by the
user.
9.4. Adjustment 1.
Adjust max. set value (e.g. 10 V) and turn potentiometer n max cw til the
required speed is reached
2. Adjust potentiometer Imax to required value of current limitation.
Important: Refer to motor manufacturers data sheet
3. Turn potentiometer Gain slowly cw until the required gain is reached
Important: If the motor turns rough, is vibrating or makes noise turn
potentiometer ccw again, until the instability of the system is obsolete.
4. Adjust set value = 0 V and adjust potentiometer Offset until the motor stops
to speed 0.
DC-Tacho control
Digital-Encoder control
9.5. Commissioning
Select the required operating mode by setting the according jumpers on the left side of the unit. Refer
to the printing on the front plate. Required selection of:
•operating mode
•Input for set value
•Maximum input frequency of encoder
Connect motor, control inputs e.g. set value, enable and an additional encoder to the drive.
Connect power supply.
Enabling and adjustment referring to manual.

Manual SCA-LE-30-03 V 0.9 10/02 page 13
e-motion Gesellschaft für Antriebstechnik mbH, Zettachring 2, D-70567 Stuttgart, Germany
Tel.: [phone], Fax.: [phone] E-mail: [e-mail]
10.Troubleshooting
Symptom Operating mode Causes Repair
Power supply voltage < 11 V Check power supply
Enable not active Check level at pin 14
Set value 0 V Check set value
Current limitation adjusted too low Check potentiometer adjustment
Imax
Speed range too low Check potentiometer adjustment
nmax
Wrong operation mode Check jumper setting
Bad connections Check connectors
Motor
does not
turn
All
Wrong wiring Check wiring
Encoder mode Encoder signals Check signals and sequence
Tacho mode Tacho signals Check voltage and polarity
No speed
control
11.Dimensions
4 x 4,5
80
100
12
104
117
1,5
3,0
100
94
90
82
37
40
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15
16
17
18 19 20 21 22 23 24
25
26
27
28
12.Versions of Text
V 0.9 (10/02) preliminary issue